Valve.



yF. MITCHELL.

VALVE. V

MPL10/111011 FILED 001.21. 1912.

1,244,630. Patented Oct. 30,1917.

2 SHEETS-SHEET I. j. f 'f if f5 f fj" F. MITCHELL.

VALVE. APPLICATION FILED 00121. |912.

Patented oct. 30,1917.

2 SHEETS-SHEET 2.

e. I www3 FREDMITCHELL, or NEDERLANmooLonADo. Y

VALVE.

- p Specification of Lettersllratents, Patented Application led October21,1912. Sera1No.72 7,005. n Y

To all whom t may concern:

Be it known that I, FRED MITCHELL, a citizen of the United States,residing at Nederland, in the county of Boulder and State of Colorado,have invented certain new and useful Improvementsin Valves;

and I do declare the following to be a full, clear, and eXactdescriptioiiof the invention, such as Will enable others skilled intheart to which it appertains to make and use the same.

This invention relates to improvements in valves and more particularly`to imp'rovef ments in plug valves; and it comprises a valve made up ofa' val-ve casingfand valve c, plug having therethrough openings lorpassages of an angular nature which will coact with eachother to form anopeningthrough the valve of a square or diamond pointed or other angularshape whichv will remain the same with diderent Vdegrees of opening ofthe-valve; it also comprises a plug valve whose plug orfvalve member ismovable into full open and full closed position together with adjustablemeans for holding said plug or'valve member yieldingly against casualmovement at any desired intermediate position between fulll ings such asalready described, the passagey in the valve plug vopening through oneside of said plug to give an unrestricted outlet from the opening insaid plug vwhen 'the valve is set at a partly closed position; it

also comprises certain novel features ofcon-` struction and arrangementof parts as more fully hereinafter set forth and as claimed.

In valves which are used for controlling the circulation of calciumchlorid brine solutions in refrigeration and coldstorage and forcontrolling the flow of sliines and'other liquids carrying more or lesssediment or foreign matter, there is a, tendency for' they -mediateadjusted position.

shown as stops carried by the plug and casf` valve to clog withresulting interruption of flow and'With accompanying inconvenienceandinterruption ofthe operation ofthe system in which such valves areused. `In systems Where the accurate control of such iiuids is necessaryor where it is desired to f f controllaccuratelythe flow of steam-'orother Vaporyit isdesirable that a nonecl'ogging valve with anopening'accurately adjustable should be provided. Vith the ordinary plugvalve havingv a round opening thereinthe relative dimensions 'of theopening' through the valve varies withthe degreek of f opening of thevalve' and when reduced-"to a small How is a mere slit which quicklyclogs when sediment or foreign matter is present.

It is the object of the present invention to provide a valve which atdimerent degrees of opening Will present an openingfof the same shape sothat this opening will preserve its identity of form irrespective of thedegree of opening ofthe valve.y Thisresultv is secured by making thepassage throughA the valve casing and plug of an angular nature, such assquare, or rectangular, or diamondshaped, withfthe openingsoarrangedthat the angular nature of the passage Will be preserved. y Asaresult the passage retains the same relative dimensions irrespective ofthe degree of opening sothat clogging With sediment lor foreign matteris reduced to a minimum. TvVhen used as a throttle valve for controllingthe flow of steam to hoisting,

controlled.

The valve of the present invention isf moreover provided with meanswhich Will enable it to be instantly turned to f ull open orfull closedposition from anyf interme-v diatefadjustcd' position together Withmeans` for holding the valve in any desired interwinding or other formslof steam engines, the steam can be admitted' gradually and its flowreadily adjustedand This means is j ing Which engage each other at fullopen -and full closed positionsy and? yieldablel spring-engaging fingersand recess soar-f ranged as to engage each otherfat-any de-y siredintermediate position and hold the valve normally at such position sothatit can be instantly moved into full open position and immediatelyreturned to the point of adjustment. Means is thus provided or adjustingthevalveto any desired rate of` How andiforl. instantlyfreturning thevalve to thehadjus'tednposition after it hasbeeir moved as for instanceto full opengposition for purposes of flushing. Means is `also thusprovided for securing any desired flow oi steam, when the valve is usedas a throttle valve.. and for` lilcreasmsthe HOW gradually.

on starting the engine, in order to avoid too rapid lcondensation.

In the following descriptiony and in the accompanying drawing are showncertainv specific-structures. of: valves embodying the. featuresofinovelty ofthe `present invention.

In the accompanying drawings:

Figure 1- is aside view of my.v improved:

device in l partly open position -Eig. Prisa top planL View of thevalve.`

showing thehaiidle' in partly open position iii fullflinesandV in closedposition in dotted lines.' f

Figniis abottom plan of the valve;

Fig. fis a central vertical longitudinal.` section ofgtheyalve with theplug ,and handle` in full 1 op en position Fig. 6 is a. liorizontal.section of the valve. with they. plug in partly open positionl asin Figi 2- 6a, .shows a section of the valve `and valve. plugofFigs. 9 and 1 1, with the dis.-kr tribjution oijtlieilow through thevalve in-y Fig.l Tis aside view of .the one form .of the valve. plugremoved from the casing;

Fig. 8,: is a detail plan of the adjusting ring;

modified `torni of the valve Fig. 10 is a top. plan of the same.;

Eig. 11 is a side view of a modified :toria of fthe. valve .plug removed.from the casing; i

Fi g 12,-is adiagramniatic view illustra? ingfthe ,relative positions.of the openings iii,

theplugand casingof the valve to provide a passage which retains thesame relative.,

dimensions irrespective of thefdegree` of Opening.;

Fig.. 13 is a `detail side view .ofa portion ot tlieadjustingring yofthe .valve illiisti'atingaslightly modified `form of stop notch.

lathe. embodiment of the invention as shown in the first eight lliguresof the; drawings 1 denotes the casing ofthe valve, said casing having avalve seat or passage :2; which .may beef d ierent forms but which isillustrated -as a .tapered valve seat.y To-this valve seat are connected.oppositely disposed ports f or passages` 3;. which. Communicate. n:ijthinteriorly threaded sockets lt on thel Qisanend view` ofthe` sameshowing passageway, thel handle` and adjusting.

Fig.. .9i-.is a central vei'ticalsection-of a.

opposite ends of the casing as shown. The passages 3 in the valve casingaccording to this embodiment of the invention are rectangular.. ordiamond shaped and are formed with their corners in line with thevertical and horizontal aXes of the casing.

Thetopor handle end of the valve casing has formedlthereonaY 'perfectlyflat annular `seat 5 the purpose of which will be hereinwasherreceiv-ingextension 9 on its lower end; saidlextenrsion having one side flattenedas,` at 10 and.y adapted to receive a, plug reT taining Washer: 11'ithe` aperture of which is flattened onone sideto ,engage the .liat porrtion of the extension 9, whereby the washer is.held;agai nstturningonthe plug. Proj eating radially from ,one side of the washer 11isastop. .lingen 12 the. outerend ofzwhich is .turned upwardly tocoactwith lugs 6 and 7.` which serve to stopthe plug atull open or,closed position. On the outer end ofjt-hel extension 9.of;the plug isathreaded `nipple.

13 with which` is .I engaged a, clamping nutV lei-whereby thewasher 11isk heldinoperativeA engagement with the plug.

.Lo,osely, mounted on or engaged with y,the

seatg 5 ;o1i the upper end .of kthe valve casi-ng isanadjusti-ng ring 15in thek lower side of whichaisaii annular recess ladapted toreeeivetheannularseat, The ring 15 isof somewhat;l greater .diameterthanI theseat 5 oi; the valve.l casing andV4 projects radiallyy On the.y outeredge of the ring isean upwardly prosonie distance. beyond saidy seat.

j ecting annular flange 17 in which at-a suit-k notch-18.; In thebodyot'the ring is formed asegmentalslot 19 witliwhich is engaged a locking.screwQO.; which has athreaded engagement-with the seat 5 of the valvecasing aiidwhjichglwhen. thering 15 rhas been ad` j ustedto bring thenotch 17 .to a proper posif tionfisadaptedito he .tightened up, therebyclampingand vsecurely locking thegring in its adjusted position.

The upper end .of tliewalve plug is :cylinand ,projects through. thering15 andvv in said. projecting .upper end of the plug isk a rectangularrecess 21 with whichis engaged a -reetangular,boss 22 formed on y theinnerend Clipping-operating handley 23 which-projects outwardly beyondthe ring 15,asshown In: the bottolll` of the recess is a threadedffsoket24.: Wthqwhch iS .enseseflf a.fhalidleflalnrng Sereni.A 25. which is en;

-iie able positionis formed a Vfshaped stopy gagedl with a passage inthe head and boss'of f the handle and which is also 'engaged with theinner end of a spring stop linger 26,

whereby the latter is secured at its inner the V-shaped notch 18 intheflange 17 of the adjusting ring 15. When the V-shaped stop lug 28engages the V-shaped notch 18 in the ring 15 and the ring is looselymounted lin its annular seat 5 on the top of the valveV casing, the plugcan be turned to provide the desired opening or passage through thevalve and the ring 15 will be turned to the same extent. Then bytightening the locking screw 20 the ring 15l can be securely clamped toits annular seat 5 and the lug will then be held in this positionagainst jarring or casual movement. Vhile the engagement of the lug orthe spring finger 26 with the stop notch 18 is suiicient to hold theplug against casual movement it is not sufficient to prevent the plugfrom being manually turned to instantlybring the same to a full openposition for the purpose of fiushing or permitting a full force of fluidto pass through the valve thereby removing any sediment or other matterwhich might have accumulated and caused a stoppage or partial stoppageof the reduced passage of the valve. As soon as the obstruction has thusbeen removed the plug may be quickly turned back by the handle to againengage the spring finger 26 with the stop notch 18 thus again reducingthe passage through the valve to the same dimensions as before.

It will thus be seen that the ring 15 can be freely turned with the plugand its handle so long as the screw 20 is loosened, and can be clampedin any desired adjusted pov sition by tightening the screw 20. l Theengagement of the spring lug 28 withv the notch 15 can accordingly bemade to represent any desired degree of opening of the valve betweenfull open and full closed position and the valve can be moved manuallyfrom this position of engagement and adj ust ment either to open orclose the valve, while by moving the parts back to rengagement of thespring lug and notch the valve will be again returned to its position ofadjustment.

In Figs 9, 10, 11 and 13 is shown a modification of the invention whichis of particular value where a carefully controlled flow through thevalve is desired, and where it is desired to indicate automatically thedegree of opening and the corresponding flow. In this instance the valvecomprises a casing 29 which is similar in construction to the casing 1eXcept that the seat 80 on the upper end of the casing to receive theupwardly projecting flangeBl the upper adjusting ring is provided withanannularr f edge of which for about one-fourth of the -f distancearound. the same and at a proper position is marked with akk scale ofgraduations 32 the purpose of which willA be hereinaft'erfdescribed.Looselymounted on' the" ring 83 which is constructed similar to thering4 15 of the firstform of the invention seat 30 within the flange 31is an adjusting and has on its outer edge an annular fiange 34 in theupper side ofwhich and at suitable point is a V-shaped notch 35 and at asuitable point with respect to the segmental slot 45 is arranged anindicating mark 36 which is adapted to co-act withthe scale ofgraduations 32, whereby the position of the notch in 'the ring and thecorresponding *j flow will be indicated. In the casing is a tapered plugseat 37 with which is 'engageda taperedv plug 38 which is constructed inthe same manner f as the plug 8 of the first form of the inventionexcept that the passage 89 of the plug 38 opens through one side of theplug as shown at 10,' the purpose of which is to cover but Vone port inthe casing and thereby provide a reduced passageway through y the valvewhich will permit direct flow of the material passing through the valvewithout deflection as shown in Fig. 6V1 of the drawing and prevent thesame from being thrown violently against one wall of the 'casing andquickly wearing av hole through the same. The plug 38 is provided withanoperating handle 41 which is secur'edatl its inner end to the upperend of the plug in thesame manner as the handle 23 and has secured ithereto a spring stop finger 4.2 which corresponds with the stopfinger26 and is pro-k vided on its outer end with a V-shaped lugk 43which is adapted to spring into engagement with the V-shaped notch 85 inthe flange ofthe adjusting ring 83, whereby the handle and the plug towhich it is attached are held in their adjusted positions for pro-yviding a. passage of the desired size inthe valve. The gra duations onthe flange 31'of the seat 30 are in such position with respect to thepassages in the valve casingthat the ylio lisy

adjusting ring 33 may be turned and set with the indicating mark 36thereon opposite to the desired graduation on the flange fi of the seat30 so that the notch 35 will be in position to receivethe spring stopfinger on the plug when the latter has been turned by the handle to adistance corresponding with the" distance indicated on the scale ofgraduations as willbe readily understood.` f

`other forms of engines.

' bodinient ot: the invention illustrated in the casing having therein atapered plug seat,

drawings the valif'e casing and plug are shown as having square passagesyet it will be obvious that other passages of an angular nature can beused which will give a rectangular or diamond shaped openingk throughthe valve which will remain ef the same shape atdiierent degrees ofopening of the valve. lVhile I have herein shown and described the stopnotch in the adjusting rings of the valves as being V-shaped,

it is obvious that a square or rectangular notch as shown in F ig. 18instead of the V-shaped notch may be used thereby providing a morepositive lock or stop tor the spring detent or stopiinger of the valve.

Vhile the valve plugs 8 and 38 and their respective seatsv are hereinshown and described as being tapered, I do not wish to be understood ascontining myselt to a tapered valve seat and plug as it is obvious I mayprovide a cylindrical plug and seat which in the case of a throttle orsome other varieties of valve will be preferable to a tapered plug andseat.

Having thus described my invention, what I claim is:

l. In a valve ot' the character described, a casing having therein aplug seat and sockets in opposite sides of said casinghavingopeningscommunicating with the plug seat, an annular seat on one end ofsaid casino', a flange surrounding said seat and having thereona scaleof graduations, an adjusting ring loosely mounted on said flanged seatandhaving an indicating mark adapted to coact with the graduations, aplug engaged in the plug seat and having an opening, a pointercarried bysaid plug and arranged to cooperate with said scale, and means toroperating said plug. n

2. In a valve of the character described, a casing having therein aplugseat and sockets inthe opposite sides of said casing communicatinOwith said alu@ seat sto as on the lower end of said casing, a plug insaid plug seat and having therethrough a pas sage vadapted to be broughtinto greater or less alinement with the sockets, an adjusting ringmounted to turn on said casing and` having therein a notch, means foroperating said plug, a linger carried by the plug and adapted to bebrought into engagement with said stops, and a springstop carried by theplug and adapted to spring into engagement with said notch in theadjusting ring whereby the movement of the valve is yieldingly stoppedat any desired point.

3. Ina valve of the character described, a

sockets arranged on. the opposite sidesY of said casing andcommunicating with said tapered plug seat, stop lugs 'formed on thebottom of said casing, a tapered plug operatively engaged with the plugseat in said opposite end of the plug and having thereon a stop lingeradapted to be broughtv into engagement with the stop lugs on this end ofthe casing whereby the movement oli they plug is stopped when thelatteris brought to full open and closed positions, and a spring stop ngercarried by theplug and4 adapted to-spring into engagement with the stoprnotchin said adjusting ring whereby kthe movementy of lthe valve isyieldingly stopped ati any desired point.

a. In a valve ot the character described, a casing having therein atapered valve. seat,

sockets on the opposite sides of said casing' and havingat their innerends angular openings communicating with the plug seat of the casing, anannular seat on one end of said casing, a iiange surrounding said seatand having thereon a scale of graduations, an adjusting ring looselymounted on said vlianged seat and having therein a notch, and anindicating mark adapted to co-act with the graduations on said seatwhereby the position of the notch in the ring is indicated, means tofasten said ring in its adjusted positions, a plug engaged with the plugseat in said casing and having therein an angular opening adapted to'bebrought into greater or less alinement with the angular openings in thecasing whereby angular passages ol. the saine shape but otl differentsizes may be formed in the valve, means for operating said plug, and aspring stop finger carried by said plug and adapted to be:

A valve of the nature described comprising a valve casing provided withanguiar openings, a valve plug provided with an angular passage coactingwith the openings in said valve casing to form an opening of the saineshape with different degrees of opening of the valve, said valve plugbeing movable into full open and full closed positions, and yadjustablemeans for holding said plug yieldingly against casual movement at anydesired intermediate position whereby the valve plug can be moved intoeither full open or full closed position from said intermediate adjustedposition.

6. A, valve ot' the nature described coinprising a valve casing providedwith angular openings, a valve plug provided withy an angular passagecoacting withthe openings in said valve casing to form an opening of thesame shape with different degrees of opening of thevalve, said valveplug being movable into full open andfull closed positions, stopsarranged to arrest the movement of said plug on reaching such positions,and adjustable means for holding said plug yieldingly at any desiredintermediate position, whereby the valve plug can be moved into fullopen or full closed position from said intermediate adjusted position.

7. A valve of the nature described comprising a valve casing providedwith angular openings, a valve plug provided withV an angular passagecoacting with the openings in said valve casing to form an opening ofthe same shape with different degrees ofY opening of the valve, saidvalve plug being movable into full open and full closed positions, astop engaging lug carried by said plug and stops on said casing arrangedto engage said lug and arrest the movement of the plug on reaching saidfull-open and full-closed positions, and adjustable means `for holdingsaid plug yieldingly at any desired intermediate position, whereby thevalve plug can be moved into full open or full closed position from saidintermediate adjusted position.

8. A valve comprising a valve casing provided with angular openingsthrough its sides, a valve plug symmetrically arranged with respect tosaid openings and provided with an angular passage coacting with theopenings in the valve casing to form an opening through the valve of thesame shape with different degrees of opening of the valve, the passagein said valve plug opening through one side of the said plug to permitan unrestricted passageway from said plug to one of said openings in thevalve casing, said valve plug being movable into full open and fullclosed positions, and adjustable means for holding said plug yieldinglyagainst casual movement at any desired intermediate position.

9. A valve comprising ahousing and a valve-plug rotatably seatedtherein, cooperative means for restricting the movement of the valveplug to determine its fullopen and closed positions, a member on thehousing and a therewith coperative member on the valve plug having meansto yieldingly interlock at a determinate point iny the rotation ofthevalve-plug intermediate of the said positions whereby to hold the plugagainst casual movement, the member on the housing being adjustable tovary the position of the point at which the movement of the valve isarrested by its said interlocking engagement with the other member. Y

l0. A valve comprising a housing and a valve-plug rotatably seatedtherein, coperathe valve plug to determine its full-open and 'closedpositions, a member on the housing and a therewith'coperative member onthe valve-plug having means to yieldingly interlockat adeterminate'point in the rotation of the valve plug intermediate of thesaid positions, wherebyl to hold the plug against casual movement, onevof said membersy be- VIV'ing adjustable to vary the position of the -1'tive means for restricting the movementy of and closed positions, amember on the housf ing and a therewithcoperative member on thevalve-plug having means to yieldingly interlock at a determinate pointin the rotation of the valve plug intermediate of the said positionswhereby to hold the plug against casual movement, one of the membersbeing adjustable to vary the position of the point at which the movementof the valve is arrested by its engagement with the other member, andthe adjustable member and the valve-part on which it is mount-k edhaving coperative means for measuring he degree of adjustment of thesaid mem- 12.4 A valve comprising a housing, a valveplug rotatablyseated therein, a 'member adjustablv mounted on the housing and havingan indicating mark and a notch. means for f securing said member in itsadjusted positions, and a resilient finger carried` onv thevalve-plug'to coperate with the said notch :tor holding the plug againstcasual movement, the housing having a graduated scale along the line ofmotion oi the said indicating mark, to determine the degree of theadjustment of the member.

'13. A valve comprising a housing and a t valve-plug rotatablv-.seatedtherein having coperative means for restricting the movement of thevalve-plug to determine vits fullopen and closed positions, a memberadjustably mounted on the housing and having a notch, means for securingsaid mem-` ber in its adjusted positions, and a` resilient lingercarried on the valve plug to coperate with the said notch for holdingthe plug against casual movement.

14. A valve comprising a housing and a valve-plug rotatably seatedtherein, a member on the housing and a therewith coperative member onthe valve plug, having means to yieldingly interlock at a determinatepoint in the rotation of the valveplug intermediate of its full-open andclosed positions, whereby the plug is held against casual movement,one-of said members being adjustable-to vary the position of the pointatwhich the .movement of the valveis In testimony whereof I have hereuntoset yarrested byts'sad interlocking,engagement my yhand n presence oftWo subscribing With the other member, and the adjustable Witnesses.

member and the valve part on which it is FRED MITCHELL. mounted havingooperative vmeans for Witnesses:

measuring the degree of adjustment of the CHAs. H. CHENEY,

-sad member. LEWIS C. ALLIsoN.

LCopies of this patent may be obtained for five cents eeeh, byaddressing the Commissioner of Patents. Washington, D. C.

